[...]

building SRPM using: cd rpm/packages; nice -n 0 ./builder -nu -nm --nodeps --http -bs  -r HEAD  -Tp auto/ti/ -tt  xorg-driver-video-sisusb.spec 2>&1
builder: SMP make flags are set to -j2
Cloning into 'xorg-driver-video-sisusb'...
09dcdb43b4fcfc08a3bb3656397a1b6f0d575ab9
Already on 'master'
Your branch is up-to-date with 'origin/master'.
Already up-to-date.
Available branches: master
Searching for tag auto/ti/xorg-driver-video-sisusb-0.9.6-7...
Searching for tag auto/ti/xorg-driver-video-sisusb-0_9_6-7...
--2015-07-07 16:21:38--  http://distfiles.pld-linux.org/distfiles/by-md5/8/e/8ebcd2bc5a87a3f1362fa76616a83e57/xf86-video-sisusb-0.9.6.tar.bz2
Resolving distfiles.pld-linux.org (distfiles.pld-linux.org)... 193.239.45.41
Connecting to distfiles.pld-linux.org (distfiles.pld-linux.org)|193.239.45.41|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 382112 (373K) [application/x-bzip2]
Saving to: 'xf86-video-sisusb-0.9.6.tar.bz2'
     0K .......... .......... .......... .......... .......... 13%  813K 0s
    50K .......... .......... .......... .......... .......... 26% 1.53M 0s
   100K .......... .......... .......... .......... .......... 40% 1.59M 0s
   150K .......... .......... .......... .......... .......... 53% 1.64M 0s
   200K .......... .......... .......... .......... .......... 66% 12.6M 0s
   250K .......... .......... .......... .......... .......... 80% 1.75M 0s
   300K .......... .......... .......... .......... .......... 93% 13.1M 0s
   350K .......... .......... ...                             100% 11.1M=0.2s
2015-07-07 16:21:38 (1.90 MB/s) - 'xf86-video-sisusb-0.9.6.tar.bz2' saved [382112/382112]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/xorg-driver-video-sisusb-0.9.6-7.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Writing git revision for tag auto/ti/xorg-driver-video-sisusb-0.9.6-7
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
Executing(--clean): env -i TMP=/home/users/builder/tmp HOME=/home/users/builder PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.37831
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf xf86-video-sisusb-0.9.6
Begin-PLD-Builder-Info
Build-Time: user:2.83s sys:1.48s real:11.51s (faults io:0 non-io:215624)
Files queued for ftp:
    388901 xorg-driver-video-sisusb-0.9.6-7.src.rpm
       202 xorg-driver-video-sisusb-0.9.6-7.src.rpm.uploadinfo
End-PLD-Builder-Info